Support early stopping too old pre-installed `tidy` command for macOS in the HTML checker
Support early stopping too old pre-installed `tidy` command for macOS in the HTML checker

aidancully/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust,graydon/rust,graydon/rust,graydon/rust,aidancully/rust,aidancully/rust,aidancully/rust,aidancully/rust